<template>
    <div class="editor" ref="editor" :style="styles">
        <input ref="uploadImg" id="uploadImg" type="file" style="display:none" accept="image/png, image/jpeg, image/gif"
            @change="uploadImage">
    </div>
</template>

<script>
import Quill from "quill";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import { uploadImg } from '@/api/common'
// 设置字体大小
const fontSizeStyle = Quill.import("attributors/style/size"); // 引入这个后会把样式写在style上
fontSizeStyle.whitelist = [
  "14px",
  "16px",
  "18px",
  "20px",
  "24px",
  "28px",
  "32px",
//   "36px",

];
Quill.register(fontSizeStyle, true);

export default {
    name: "Editor",
    props: {
        /* 编辑器的内容 */
        value: {
            type: String,
            default: "",
        },
        /* 高度 */
        height: {
            type: Number,
            default: null,
        },
        /* 最小高度 */
        minHeight: {
            type: Number,
            default: null,
        },
    },
    data() {
        return {
            Quill: null,
            currentValue: "",
            options: {
                theme: "snow",
                bounds: document.body,
                debug: "warn",
                modules: {
                    // 工具栏配置
                    toolbar: [
                        ["bold", "italic", "underline", "strike"],       // 加粗 斜体 下划线 删除线
                        ["blockquote", "code-block"],                    // 引用  代码块
                        [{ list: "ordered" }, { list: "bullet" }],       // 有序、无序列表
                        [{ indent: "-1" }, { indent: "+1" }],            // 缩进
                        // [{ size: ["small", false, "large", "huge"] }],   // 字体大小
                        [{ size: fontSizeStyle.whitelist }],   // 字体大小
                        [{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
                        [{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
                        [{ align: [] }],                                 // 对齐方式
                        ["clean"],                                       // 清除文本格式
                        ["link", "image", "video"]                       // 链接、图片、视频

                    ]
                },
                placeholder: "请输入内容",
                readOnly: false,
            },
        };
    },
    computed: {
        styles() {
            let style = {};
            if (this.minHeight) {
                style.minHeight = `${this.minHeight}px`;
            }
            if (this.height) {
                style.height = `${this.height}px`;
            }
            return style;
        },
    },
    watch: {
        value: {
            handler(val) {
                if (val !== this.currentValue) {
                    this.currentValue = val === null ? "" : val;
                    if (this.Quill) {
                        this.Quill.pasteHTML(this.currentValue);
                    }
                }
            },
            immediate: true,
        },
    },
    mounted() {
        this.init();
    },
    beforeDestroy() {
        this.Quill = null;
    },
    methods: {
        init() {
            const editor = this.$refs.editor;
            this.Quill = new Quill(editor, this.options);
            this.Quill.pasteHTML(this.currentValue);
            this.Quill.on("text-change", (delta, oldDelta, source) => {
                const html = this.$refs.editor.children[0].innerHTML;
                const text = this.Quill.getText();
                const quill = this.Quill;
                this.currentValue = html;
                this.$emit("input", html);
                this.$emit("on-change", { html, text, quill });
            });
            this.Quill.on("text-change", (delta, oldDelta, source) => {
                this.$emit("on-text-change", delta, oldDelta, source);
            });
            this.Quill.on("selection-change", (range, oldRange, source) => {
                this.$emit("on-selection-change", range, oldRange, source);
            });
            this.Quill.on("editor-change", (eventName, ...args) => {
                this.$emit("on-editor-change", eventName, ...args);
            });
            this.Quill.getModule("toolbar").addHandler("image", this.uploadImageHandler)
            // let fontSize = ['10px', '18px', '32px']
            // this.Quill.imports['attributors/style/size'].whitelist = fontSize;
            // this.Quill.register(Quill.imports['attributors/style/size']);
        },
        uploadImageHandler() {
            const input = this.$refs.uploadImg
            input.value = ''
            input.click()
        },
        uploadImage(event) {
            const form = new FormData()
            form.append('file', event.srcElement.files[0])
            uploadImg(form).then(res => {
                const addImageRange = this.Quill.getSelection()
                const newRange = 0 + (addImageRange !== null ? addImageRange.index : 0)
                this.Quill.insertEmbed(newRange, 'image', res.data[0].fileurl)
                this.Quill.setSelection(1 + newRange)
            });
        }
    },
};
</script>

<style>
.editor,
.ql-toolbar {
    white-space: pre-wrap !important;
    line-height: normal !important;
}
.quill-img {
    display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
    content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
    border-right: 0px;
    content: "保存";
    padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
    content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
    content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="16px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="16px"]::before {
    content: "16px";
    font-size: 16px;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="18px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="18px"]::before {
    content: "18px";
    font-size: 18px;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="20px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="20px"]::before {
    content: "20px";
    font-size: 20px;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="24px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="24px"]::before {
    content: "24px";
    font-size: 24px;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="28px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="28px"]::before {
    content: "28px";
    font-size: 28px;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="32px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="32px"]::before {
    content: "32px";
    font-size: 32px;
}
/* .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="36px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="36px"]::before {
    content: "36px";
    font-size: 36px;
} */

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
    content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
    content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
    content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
    content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
    content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
    content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
    content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
    content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
    content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
    content: "等宽字体";
}
</style>
